谁帮我做一下这几个题的答案，谢谢！
Q5 to Q7:
According to a theory advanced
by researcher Paul Martin, the wave
of species extinctions that occurred
Line in North America about 11,000 years
(5) ago, at the end of the Pleistocene era,
can be directly attributed to the arrival
of humans, i.e., the Paleoindians, who
were ancestors of modern Native
Americans. However, anthropologist
(10) Shepard Krech points out that large
animal species vanished even in areas
where there is no evidence to demon-
strate that Paleoindians hunted them.
Nor were extinctions confined to large
(15) animals: small animals, plants, and
insects disappeared, presumably not
all through human consumption. Krech
also contradicts Martin’s exclusion of
climatic change as an explanation by
(20) asserting that widespread climatic
change did indeed occur at the end of
the Pleistocene. Still, Krech attributes
secondary if not primary responsibility
for the extinctions to the Paleoindians,
(25) arguing that humans have produced
local extinctions elsewhere. But,
according to historian Richard White,
even the attribution of secondary
responsibility may not be supported
(30) by the evidence. White observes that
Martin’s thesis depends on coinciding
dates for the arrival of humans and the
decline of large animal species, and
Krech, though aware that the dates
(35) are controversial, does not challenge
them; yet recent archaeological
discoveries are providing evidence
that the date of human arrival was
much earlier than 11,000 years ago.
--------------------------------------------------------------------------------
Q5:
Which of the following is true about Martin’s theory, as that theory is described in the passage?
Answer:
--------------------------------------------------------------------------------
Q6:
In the last sentence of the passage, the author refers to “recent archaeological discoveries” (lines 36-37) most probably in order to
Answer:
--------------------------------------------------------------------------------
Q7:
Which of the following, if true, would most weaken Krech’s objections to Martin’s theory?
Answer:
第6套题有同篇文章，里面是B E B, 跟偶的相同，可是11套的答案是C, CA
谁能告诉偶为啥GWD11的答案错的这么多。偶的答案基本和11套答案不同。
V11，ECCEB EBCAC DECDE CDECE CCABE CBABD DEACC CDACD D
谢谢tianwan for the keys!
偶怎么觉得是 答案是 A 呢? 因为 Martin 这家伙的理论确实是以 hunting 为假设的. 而且文章中根本看不出这家伙 "denies that the Pleistocene species extinctions were caused by climate change." 对吧? 可能有可能没有deny, 我们怎么能想当然呢? 呵..
Q5:
Which of the following is true about Martin’s theory, as that theory is described in the passage?
关于楼上的问题,虽然年代久远但还是回答了它:
17行:Krech also contradicts Martin’s exclusion of climatic change as an explanation
可以作出选择
我的问题是,第7题如何排除C选项呢,我觉得B有很多不尽人意的地方
关于楼上的问题,虽然年代久远但还是回答了它:
17行:Krech also contradicts Martin’s exclusion of climatic change as an explanation
可以作出选择
我的问题是,第7题如何排除C选项呢,我觉得B有很多不尽人意的地方
同问！BC好像都能削弱阿
c选项没有削弱结论
（C） Additional evidence indicating that widespread climatic change occurred not only at the end of the Pleistocene era but also in previous and subsequent eras
krech反驳M理论的观点之一就是说M理论没有考虑气候因素
c选项没有削弱结论
（C） Additional evidence indicating that widespread climatic change occurred not only at the end of the Pleistocene era but also in previous and subsequent eras
krech反驳M理论的观点之一就是说M理论没有考虑气候因素
不同意
正是因为气候的大规模变化自始至终都存在，所以，可以推出气候的变化不会导致大规模的灭绝
"nor were extinctions confined to large animals: small animals, plants, and insects disappeared, presumably not
all through human consumption."
not all说明Krech承认部分灭绝是由人导致的，所以选项B不能削弱Krech的结论。支持C
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